Sink bowl



FIG. 1 is a front perspective view of a sink bowl showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a right side elevational view, the left side being a mirror image thereof. 

The ornamental design for a sink bowl, as shown and described. 